Based on our record, Duck DNS seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If a changing public IP is the problem, take a look at duckdns. Source: over 1 year ago
Why don't you use Dynamic-DNS like https://duckdns.org and have the pi send your IP to the DDNS with script automated to run every 30 mins in crontab. That way you don't need anything like what you talked about and your DDNS would update from the very same pi that you are running the pi on! Source: almost 3 years ago
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
No-IP - Dynamic DNS and Managed DNS Provider
Price Tracker by Relbis Labs - Price Tracker is a command-line tool for monitoring the prices of productsFeaturesTracking prices and availability of products.Tracking Amazon Kindle books.Displaying products information in a terminal.Exporting data into Excel and YAML files.
FreeDNS by Afraid.org - Free DNS hosting, lets you fully manage your own domain. Dynamic DNS and Static DNS services available. You may also create hosts off other domains that we host upon the domain owners consent, we have several domains to choose from!
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
Dyn - Managed DNS, Outsourced DNS & Anycast DNS